i mapped out on a fib extension of each bull cycle since BTC was $100. Its easy to notice each bull gets more powerful as time goes on and adoption increases. recently each step of the bull has created new highs in between the 1.618 & 2.618 of the previous step. As shown by the light blue arrows. Therefore one can assume if we are following the pattern and once the current Bear cycle comes to an end i think £25,000 is possible by the end of 2018. And this will happen even quicker if we were to have another financial event such as 2008/9 credit crisis.